Ah, nevemind, my bad.What happened was that there was some vertices without waypoints in them. All vertices that did have waypoints had linear interpolation, showing a linear icon in the vertices list parameter. With default interpolation at TCB, moving a vertex that did not already had a waypoint that got set as TCB. The vertices list icon changed to TCB, making me think the overall interpolation changed. Icon was grey though, so I should know it was mixed vertex interpolation within. Opening the vertices list showed that those with an preexisting value had not changed interpolation...

I havent used pressure at all in Synfig before so I'm not sure my wacom is setup properly, set everything to screen in input devices didn't seem to help.

If you want, I can give you some support on this:First, when you setup the extended devices, look the names of all the devices found. Then, one by one set each wacom device to screen and disable all the rest (wacom and not wacom). Test the Draw tool and once find the one that works use it.-G